Turned-shoe-shaping machine



, M. BROCK.

-TURNED SHOEA SHAPING MACHINE.

' APPucAnoN man AuG.8.-19u-.

M. BROCK.v TURNED SHOE SHAPING MACHINE.

APPLICATION man Aue.8.191'1.

APtented J an. 3, 1922,

2 SHEETS-SHEET 2.

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earner serres.

MTTHIAS BROCK, OF QBOSTON, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO UNITED 'SI-EOE MACHINERY CORPORQTON, OF PATERSON, NEW JERSEY, A. CORPORATION OF NEW' JERSEY.

TURNED-SHOE-SHAPING MACHINE.

Application filed August 8, 1917.

To all whom t may concern.'

Be it known that l, MATTHIAS BROCK, a citizen of the United States, residing at Boston, in the county of Sudolk and State of Massachusetts, have invented certain Improvements in Turned-Shoe-Shaping Machines, of which the following description, in connection with the accompanying drawings, is a specification,l like reference characters on the drawings indicating like parts in the several figures.

This invention relates to machines for use in the manufacture of shoes and in particular to the manufacture of turn shoes.

Great difliculty is experienced in the second lasting operation in the maufacture of shoes of this type. As is well known, the shoe is first lasted and sewed wrong side out and is then turned right side out and second lasted. The second last must be large enough to effect the proper stretching and shaping of the shoe and therefore its insertion is diicult sincethe upper of the shoe is considerably misshapen and the lining rather full and liable to wrinkle and pull. The forcing of the full size last into the shoe frequently results in dragging out of position the material inside the'shoe and in consequent wrinkling and injury. lt has been the practice to run a thin steel blade in between the upper and the second last in order to release Caught places in the lining and flatten out the wrinkles, but this operation is frequently unsuccessful, as a lining which is once caught in a wrinkle does not readily flattenout again completely.

My invention provides a novel machine for the performance of a stretching and smoothing or forming operation between the turning and the second lasting.l I contemplate engaging the inside of the turned shoe at isolated points by stretcher members and relatively separating these members so that the lining may be pulled out and flattened without undue drag or friction on any part of the apparatus. Y.

An important feature ofthe invention is an organization of forepart stretching members contacting with the upper at isolated points separated by relatively extensive free areas whereby a wrinkled lining may be smoothed with minimum interference from the stretching members.

Specification of Letters Patent.

Patented Jan. 3, 1922.

Serial No. 185,101.

Another important feature of the invention is the organization of toe members and a separate instep member arranged for relative expansion and contact with the shoe at isolated points. The forepart of the slice is thereby stretched both laterally and vertically, and the lining is pulled out and straightened very efliciently.

A further feature of the invention comprises an instep stretcher lying normally withinthe contour of a toe portion and arranged to be projected beyond it upon eX- panslon of the apparatus. This projection of the-instep member raises the lining and upper of the turnedshoe from Contact with adjacent parts of the toe portion and enables the lining to flatten out freely.

The invention will be understood from the following description of the construction and use of a preferred embodiment of the machine portion of it.

In the drawings, which show a preferred embodiment ofthe machine of the invention, by which the novel process may be conveniently practised.,

Fig. 1 is a side elevation;l

Fig. 2 is a perspective View, partly broken away', of the machine'in expanded position;

Fig. 3 is a plan view of the machine in the position illustrated in Fig. 2;

Fig. e is a plan view of the machine in collapsed position.

Fig. 5 shows a transverse section of a turned shoe before stretching;

Fig. 6 shows a similar view of the shoe during the stretching operation.

The. base 10 may be conveniently mounted in any desired manner. It carries at its upper end a heelY shaped portion 12 ,having integrally mounted thereon a pair of guides 14. which form a slideway 16 between them. The heel portion 12 contains a corresponding slideway 18 accommodating a slide 2O havingymounted upon its forward end a slide or plunger 22 which slides in the slideway 16 between the members 14. An ear 24E is mounted on the lower side of th-e slide 2O and has an instep stretching lever 26 pivotally mounted at 27 in a notch in its lower end. The lower end of the instep lever 26 is mounted by a pin and slot connection 28 upon the base 10 The upper end 30 of the lever 26 extends diagonally upward corresponding -in shape to the instep portions of two toe or forepart pieces 32 which arepivotally mounted at 3a upon the end of the slide 22. The membersI 1dr carry upstanding pins 3G which occupy slots 38 in the toe pieces. The toe pieces are recessed as at t() to slide backwark and forward upon the members 14, the slots 38 being so shaped that the pins 3G force the toe pieces apart when they are pushed forward by the slide 22, and draw them together when they are pulled backward.

rIlhe slide 22 has an aperture #Il receiving the ball-shaped head Ll2 of a bell-crank il which is pivoted inthe heel portion 12. The other end of the bell-crank lever is pivoted to a rod L16, which may be actuated Aautomatically or by the operator in any desired manner.

In the practice of my invention, the shoe will be first lasted and sewed and turned in the ordinary way. It willthen be out of shape and the lining will be somewhat more full than the upper. The shoe will be placed on the foot-shaped apparatus above described while it is in collapsed position as shown in Fig. Owing to the reduced size of the form in this position, the shoe may be readily slipped over it. The operator, by manipulation of the rod 46, may then'project the toe portions 32 forward into the shoe, the heel portion being buttressed by the heel part of the form. At the same time, these toe portions will be projected outwardly from each other by the pin and slot connections 36, 38. This will pull the lining laterally and also shape the upper in this direction. Simultaneously with the above operation the slide 20 will carry forward the pivot 27 and the lever 26. The end 30 of this lever will be projected forward at a more rapid rate than the pivot 27 and will therefore be projected outside of the instep contour of the toe pieces 32 as shown by dotted lines in Fig. 1. This will pull the lining vertically and stretch the shoe in that direction while the lateral pulling out and stretching of `the lining and upper are going on. The lining will therefore have no oppotunity of forming the wrinkles which are caused by forcing a full-sized last endwise into the shoe.

The superiority of the result obtained by my novel stretching and formingmeans should be noted. The toe members 32 are carried into the shoe by their tip ends and spread as they go, so that they rub the wrinkles out of the lining as they slip into the shoe. The member 30 is thin, and is in contact with the inside of the upper only over a small surface. In performing its function it lifts the upper away from the toe pieces 32 so that the upper is supported at three isolated places on these members and the lining is not prevented from properly flattening out by any friction upon the stretching pieces. See F ig. 6. I have found in my experimentation on this invention that none of the formers and` stretchers here tofore known operate efficiently in straightening the lining of a turn shoe since their moving parts contact with it over too great a surface. p

The operation can be performed in a few seconds and really shortens the time required for the manufacture of the shoe since it does away with the necessity of using the flat blade which has been mentioned above and makes the second lasting operation correspondingly shorter. Thus by the use of my novel machine I am enabled to cheapen the manufacture of turn shoes and to producen better and more satisfactory article. It is well known that wrinkles in the lining are frequently found in turn shoes in spite of all the effortv made by manufacturers to avoid their occurrence and my invention secures entire freedom from this annoyance. Y

lllhat I regard as new and desire to secure by Letters Patent of the United States is 1. In a. machine of the class described, a last-shaped form comprising a plurality of parts engaging the shoe and constructed and arranged for relative expanding movementin more than two diverging directions, the contact with the shoe being limited substantially to areas of considerably greater length than width and widely separated from one another, whereby a wrinkled lining may be smoothed with minimum interference from the stretching parts.

2. In a machine of the class described, a last-shaped form comprising a heel member, a plunger, and toe and instep members contacting with the upper along narrow longitudinal strips separated by relatively wide free areas, whereby a wrinkled lining mayV be smoothed wtih minimum interference from. the stretching parts operated by the plunger to stretch 'a shoe on the form.

3. Ina machine of the class described, a. last-shaped form comprising a heel member, a plunger and toe and instep members pivoted to the plunger.

4. In amachine of the class described, a last-shaped form comprising a heel member, a plunger, and -toe and instep members con' structed and arranged for simultaneous 1ongitudinal movement, and means for moving the toe and instep members away from the longitudinal axis of the form.

5. In a machine of the class described, a main frame, a last-shaped form comprising toe stretching members, a plunger for operating them, and aninstep stretching lever pivoted to the plunger and connected with the main frame.

6. In a machine of the class described,

means for stretching a shoe longitudinally, and means for expandingthe shoe laterally, constructed and arranged to engage the upper along narrow longitudinal strips separated by relatively Wide free areas whereby a turn shoe lining may be pulled out. and flattened With minimum interference from the expanding means.

7. A shoe stretcher comprising a heel portion and an expansible toe portion, constructed and arranged to have substantially the outline of a shoe or last When the toe portion is expanded to substantially its limiting position, and an instep stretcher operable simultaneously with the toe portion to smooth a shoe lining.

8. A shoe stretcher comprising a heel portion and a laterally and longitudinally ex pansible toe portion, constructed and arranged to have substantially the form ot a shoe or last When the toe portion is expanded to substantially its limiting position, and lying substantially Within the last-shaped contour Which comprises the heel portion When the stretcher is being inserted in the shoe.

9. In a machine of the class described, a heel member, a plunger mounted for sliding movement on it, toe members pivoted on the plunger at their front ends, means for spreading the toe members when the plunger is advanced, and an instep stretching member pivotally connected to the plunger and to the heel member.

l0. In a machine of the class described, a heel member, a plunger mounted for sliding movement on it, toe members pivoted on the plunger at their front ends, means for spreading the toe members when the plunger is advanced, and an instep stretching member controlled by, and having a more rapid movement than, the plunger in the same direction or" movement of the plunger.

11. In a machine of the class described, a frame, toe stretching means movably mounted thereon, and an instep stretching member pivotally connected both to the frame and also to the said means between the irstnamed pivot and its point of Contact with the shoe.

,12. In a machine of the class described, an expansible orepart-shaped structure and a blade-shaped instep member constructed and arranged to contact with a shoe upper at its thin edge and to be projected outside of the contour of the forepart-shaped structure, there being considerable Width of upper between said blade-shaped member and the members of the expansible fore-part structure.

In testimony whereof I have signed my name to this speciication.

MATTHIAS BROCK. 

